【题目】Joe had changed so much that I could hardly ________him at first in Shanghai Expo Garden.
A.remember
B.realize
C.recognize
D.conquer

【答案】C
【解析】A．remember记得；B．realize意识到；C．recognize认出，听出； D．conquer征服；句意：Joe变化如此之大，以至于我在上海世博园都没有立马认出他 来。根据句意，故选C。